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IndustryArena Forum > CNC Electronics > Servo Motors / Drives > what makes a servo "digital"?

Thread: what makes a servo "digital"?

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  1. 08-01-2016, 04:06 PM #1
    Boltz
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    what makes a servo "digital"?

    What, exactly, is a "digital" servo? Is it simply a drive which can work with a digital input?
    My main machine: Multicam MG series (MG101) with original Extratech H971 controller, Minarik servo motors, Electro-Craft BRU-series drives, 4KW Colombo. Let's talk Multicam!
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  2. 08-01-2016, 06:02 PM #2
    eman5oh
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    Re: what makes a servo "digital"?

    For different manufactures it means different things, but to me a true digital servo is one that the pid control loop runs in software on a processor opposed to analog electronics.
    Everything in moderation, including moderation.
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  3. 08-01-2016, 06:31 PM #3
    Al_The_Man's Avatar
    Al_The_Man
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    Re: what makes a servo "digital"?

    My interpretation has always been the nature of the drive command signal, Analogue ±10vdc, Step-Dir, or Digital string (binary value).
    Apart from Fanuc/Mitsubishi etc, which are digital, I have mainly used ±10vdc torque mode drives with the likes of Galil motion.
    Al.
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  4. 08-02-2016, 02:59 AM #4
    mike_Kilroy
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    Re: what makes a servo "digital"?

    Quote Originally Posted by eman5oh View Post
    For different manufactures it means different things, but to me a true digital servo is one that the pid control loop runs in software on a processor opposed to analog electronics.
    All drive mfgrers we sell/sold agree.

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